iwconfig设置wifi问题

iwconfig
eth0 no wireless extensions.

wlan0 IEEE 802.11abgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=off
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off

lo no wireless extensions.

iwconfig interface [ESSID {NN|on|off}]
iwconfig: unknown command "[ESSID"
on：未找到命令
off}]：未找到命令

I. scanning WIFI PCI devices...
-- Intel Corporation PRO/Wireless 5100 AGN [Shiloh] Network Connection
==> PCI ID = 8086:4237
* II. querying ndiswrapper...
* III. querying iwconfig...
eth0 no wireless extensions.
wlan0 IEEE 802.11abgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=off
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
lo no wireless extensions.

下载个WIFI连接软件，直接靠软件帮你设置，你就能上网了。省力省时。

无线网卡是否已正常驱动。